A marking method for installation of ship anchor bolts

Abstract

The invention discloses a line marking method for installing anchor bolts of a ship. A first reference line is pre-drawn on the deck along the ship's length direction or ship width direction, and then at a distance of n reference objects from the first reference line. Draw the second reference line, measure the distance between the first reference line and the second reference line, and compare it with the design requirements. If the conditions are met, the second reference line is determined. If the conditions are not met, the position of the second reference line is checked. Adjustment. Finally, draw the third reference line up to the xth reference line according to the above method, so as to draw reference lines in the length direction and width of the ship, and divide them equally according to the distance between two adjacent reference lines Draw a small grid to determine the location of the anchor bolt installation holes. The position error of the structural parts on the deck during the assembly process of the ship can be dispersed to the inside of each large grid, and by dividing the large grid into small grids, the errors are distributed by the small grids on the deck. Grid division digestion.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for marking out lines for installing anchor bolts of ships. Background technique [0002] In some special ships, due to the special nature of their work, it is necessary to place and fix scientific research and test equipment arbitrarily within a certain range on each deck. Therefore, it is necessary to set a large number of anchor bolts on the deck of the ship to realize the The requirement that the equipment be fixed at any position on the deck. And because the connecting parts of each scientific research test equipment and the deck are all made according to the same standard, there is a correlation between the spacing distances between the openings on the deck. On a specific scientific research ship, it includes four decks, a large number of anchor bolts are set on each deck, a total of about 1500, and any four adjacent anchor bolts are a group, it is necessary ...

AI Technical Summary

Problems solved by technology

Use existing technical methods to mark lines, open holes and install anchor bolts. Since there are many anchor bolt installation holes that need to be opened on the deck surface, and the positions are related to each other, if the whole is drawn one by one from one side of the deck to the other , when it reaches the end of the other side or somewhere, the overall accumulation of errors will be too large, resulting in too large a deviation of the distance between the bolt and the structure, which will affect the installation of the connecting elbow (the distance between the center of the bolt and the adjacent structural parts in the design requirements It is basically 100mm), which leads to the fact that the anchor bolts that have already been marked in the previous part or have been drilled and installed need to be re-marked or removed and then repaired and cut and re-installed, and even a large-scale replacement of the deck occurs (drilling error too large to be corrected), will cause a lot of rework and a lot of waste of materials and labor

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